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About Discs/Files
Playable discs/files
Discs AUDIO CD CD-R CD-RW
Files MP3/WMA
•  Some MP3/WMA files may not be played 
back and will be skipped. This results from 
their recording processes and conditions.
•  When making MP3/WMA discs, use ISO 9660 
Level 1 for the disc format.
•  This system can play back MP3/WMA 
recorded at the following sampling 
frequency and bitrate.
Bitrate: MP3
WMA
32 kbps – 320 
kbps
32 kbps – 320 
kbps
Sampling frequency:
32 / 44.1 / 48 kHz
•  This System cannot play “packet write” discs.
•  This System cannot show the Tag data of 
MP3/WMA.
•  This System can recognize up to 99 folders 
and 999 files on a disc, and up to 300 folders 
and 999 files on a USB device.
Important for USB mass storage 
class devices
For connecting/disconnecting:
•  Disconnect the USB device after stopping 
playback. Disconnecting the USB device 
during recording/playback may cause some 
problem of the USB device and its files. 
•  When connecting with a USB cable, use a 
USB 2.0 cable less than 1 m in length.
•  You cannot connect a computer to the USB 
MEMORY terminal of the System.
•  Do not use a USB hub.
•  When the power is supplied through the 
AC outlet and USB is selected as the source, 
the USB device is charged through the USB 
MEMORY terminal.
•  Deactivate the security function of the USB 
device before connecting.
For playing back:
•  The playing order of MP3/WMA files
–  Groups are played in creation order. In 
a group, tracks are played in recording 
order.
–  The playing order may change if you 
change a folder name or file name on the 
PC.
•  You cannot play back a file larger than 2 
Gigabytes. 
•  It is recommended to use USB mass storage 
class devices with 4 GB or less storage 
capacity.
•  If your USB device is partitioned, only the 
first partition is recognized.
•  Some USB devices may not be recognized or 
may not work properly.
•  Copyrighted tracks (WMA-DRM tracks) 
cannot be played back on the System.
•  Electrostatic shock at connecting a USB 
device may cause abnormal playback of 
the device. In this case, disconnect the USB 
device then reset this System and the USB 
device.
•  JVC bears no responsibility for any loss of 
data on the USB mass storage class device 
while using this System.
RV-NB90J.indd28RV-NB90J.indd28 12.3.302:21:42PM12.3.302:21:42PM